Forward port 0.1.1 incubating Maven poms to trunk

I improved the Maven poms in 0.1.1-incubating, and trimmed them down to a publishable set of dependencies.

My improvements:

1. reduce the redundancy in the deps section by not repeating deps in each sub-project.
2. use explicit dependency and module version #s which are required to not have "moving target" dependencies in the downstream applications and that allow each individual gora-* module to be included on its own (without having to include gora-core).

I'd like to forward port these to trunk and then update per trunk's dependencies.